Title :
True time-delay beamsteering for radar
Author_Institution :
Air Force Res. Lab. Sensors Directorate, Wright State Univ., Dayton, OH, USA
Abstract :
This paper showcases the benefits of true time-delay beamsteering for radar systems. The basics of array factor are reviewed and the problem of beam squint over wide bandwidths is shown. Available technologies to implement time-delay are discussed including RF photonics, MEMS, and MMICs. Finally, measured antenna pattern data from a MMIC-based time-delay module is presented, showing a lack of beam squint across 2 GHz instantaneous bandwidth.
Keywords :
MMIC; UHF antennas; antenna radiation patterns; delay circuits; micromechanical devices; radar resolution; radar signal processing; MEMS; MMIC-based time-delay module; RF photonics; antenna pattern data measurement; array factor; bandwidth 2 GHz; beam squint; radar system; true time-delay beamsteering;
Conference_Titel :
Aerospace and Electronics Conference (NAECON), 2012 IEEE National
Conference_Location :
Dayton, OH
Print_ISBN :
978-1-4673-2791-6
DOI :
10.1109/NAECON.2012.6531062
